I'd be curious to see the numbers on Planet Fitness. At $10/month, what is their percentage of members who regularly show vs never showing up. $10/month is easy to forget about, like a steaming service. A gym charging $50 or $100+/month is harder to ignore and I assume would have a higher percentage of members actually showing up. Not because people who pay more will be more likely to turn into gym rats, but because there would be fewer people brushing off the monthly charge as a rounding error in their budget over time.
I've been to a Planet Fitness once as a guest of someone while on vacation. It as well kept, I was able to find some equipment for a good workout, and it was pretty crowded (in August), and I'm sure there are a lot of regulars. The question is, what percentage of the overall membership are those regulars?
I'm not sure if they still do the pizza thing, but that always struck me as odd and what gave them a bad image in my book. I never wanted to be a member of a gym that appeared to be sabotaging its members. It makes it seem like the gym isn't invested in the success of its members. I felt the same way about the dentist giving me candy after a cleaning when I was a kid.